This sled wasn't shifting right so we dug out the shop manual that came with it. In top engine photo notice a thing-a-ma-jig with wires below carb. That was a stuck two stage solenoid that should touch a bell crank. Could not find parts on the planet so we drilled the brads, repaired guts and tie wrapped back together. Rigged a lever on our incorrect carb and BAM. At 40% throttle the shift kick down and at 60% you hear a click in the tranny and the stator blades in the convertor go to performance mode. Pretty slick for 1966. That with the 3:40ish pos truck axle makes for a little pep in this baby. Plan on having it ready for Houston Spring Nationals.